Competitive analysis from click-through log.

Gang Wang Jian Hu Yunzhang Zhu Hua Li Zheng Chen Competitive analysis from click-through log. 1051-1052 2009 WWW http://doi.acm.org/10.1145/1526709.1526851 conf/www/2009 db/conf/www/www2009.html#WangHZLC09